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Subject: Re: unsolveable in the 90's - how about now?

Author: F. Huber

Date: 11:21:35 08/28/05

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On August 28, 2005 at 14:10:02, Uri Blass wrote:

>On August 28, 2005 at 13:59:33, F. Huber wrote:
>
>>On August 28, 2005 at 13:52:14, Uri Blass wrote:
>>
>>>On August 28, 2005 at 13:20:32, F. Huber wrote:
>>>>And ChestUCI 2005 in 9 sec (on a slow Celeron/400)! ;-)
>>>
>>>Unfair comparison.
>>>
>>>When you already give it conditions for special mate of course it has an
>>>advantage.
>>
>>It seems that you are not able to read! :-(
>>
>>Look at ChestUCI´s output:
>>
>>>ChestUCI Ver.4.2:
>>>CPU: Celeron 400MHz
>>>FEN: 1r4r1/3q1npk/2b1pbnp/Rp1p4/1N1P3P/2PQ1pP1/1K3B2/5B1R w - -
>>>Position-Analysis:  C0/R0/K2/P9/X36
>>>AutoTurbo-Search for Special-Mate [C1/R0/K0/P0/X0] in 15 ...  (Hash=33MB)
>>>AutoTurbo-Search for Special-Mate [C0/R1/K0/P0/X0] in 15 ...  (Hash=33MB)
>>> 15/15	00:09	     579.491	83.620	+M15	1.Dxg6+
>>>1.Qxg6+ Kxg6 2.Bd3+ Kh5 3.g4+ Kxg4 4.Rg1+ Kh3 5.Bf1+ Kh2 6.Bg3+ Kxg1 7.Ra1 Ra8
>>>8.Rb1 Ra1 9.Rxa1 Ra8 10.Rb1 Ra1 11.Rxa1 Qa7 12.Rb1 Qa3+ 13.Kxa3 f2 14.Bh3+ f1Q
>>>15.Rxf1#
>>
>>There were absolutely NO conditions given before startung it - this is the
>>usual AutoTurbo-Mode of ChestUCI, finding the solution in 9 secs!
>>
>>So please don´t talk nonsense here ...
>>
>>Franz.
>
>What is the meaning of this:
>
>C0/R0/K2/P9/X36
>AutoTurbo-Search for Special-Mate [C1/R0/K0/P0/X0] in 15 ...  (Hash=33MB)
>AutoTurbo-Search for Special-Mate [C0/R1/K0/P0/X0] in 15 ...  (Hash=33MB)
>
>I do not understand what is the meaning of "C R K P X" and maybe this is the
>default option for mate problems(I used chest only to find the shortest mate)
>but it seems that chest knew before starting that it is mate in 15 moves so it
>does not need to search for longer mates.
>
>Uri

Oh, quite interesting!

You don´t know the meaning of something, but nevertheless make such wrong
assumptions about it?

To repeat again: ChestUCI did NOT know any special parameter before starting
the search (except the depth 15 of course, but also with 20 or 25 it won´t
have needed one single second longer) - it found those parameter R1 by itself
(which is BTW the ThreatDepth).

All these infos about ChestUCI could be found in its description - if you would
have read it, there won´t be any need to make such wrong statements here!

Franz.




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